* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2d3436;
    --accent: #0984e3;
    --bg: #ffffff;
    --text: #2d3436;
    --text-light: #636e72;
    --border: #dfe6e9;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
}

/* Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--primary);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: var(--text);
    transition: color 0.2s;
}

nav a:hover {
    color: var(--accent);
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 6rem 0;
}

#hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: 4rem;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-light);
}

h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent);
    display: inline-block;
}

/* Projects */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.project-card {
    padding: 2rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.project-card h3 {
    margin-bottom: 0.5rem;
    color: var(--accent);
}

/* Contact */
.contact-links {
    list-style: none;
    display: flex;
    gap: 2rem;
    margin-top: 1rem;
}

.contact-links a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.contact-links a:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-light);
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    nav ul {
        gap: 1rem;
    }

    section {
        padding: 4rem 0;
    }
}